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  • python3 opencv获取视频的总帧数介绍+获取视频各种参数介绍

    • 获取视频总帧数
    import cv2
     
    cap=cv2.VideoCapture(path)
     
    #get方法参数按顺序对应下表(从0开始编号,比如这里为了获取视频的总帧数,在下表是排第八个的 CV_CAP_PROP_FRAME_COUNT
    frames_num=cap.get(7)
    
    • opencv参数列表
    0 CV_CAP_PROP_POS_MSEC Current position of the video file in milliseconds or video capture timestamp.
    1 CV_CAP_PROP_POS_FRAMES 0-based index of the frame to be decoded/captured next.
    2 CV_CAP_PROP_POS_AVI_RATIO Relative position of the video file: 0 - start of the film, 1 - end of the film.
    3 CV_CAP_PROP_FRAME_WIDTH    #视频帧宽度
    4 CV_CAP_PROP_FRAME_HEIGHT    #视频帧高度
    5 CV_CAP_PROP_FPS            #视频帧速率
    6 CV_CAP_PROP_FOURCC 4-character code of codec.
    7 CV_CAP_PROP_FRAME_COUNT  #视频总帧数
    8 CV_CAP_PROP_FORMAT Format of the Mat objects returned by retrieve() .
    9 CV_CAP_PROP_MODE Backend-specific value indicating the current capture mode.
    10 CV_CAP_PROP_BRIGHTNESS Brightness of the image (only for cameras).
    11 CV_CAP_PROP_CONTRAST Contrast of the image (only for cameras).
    12 CV_CAP_PROP_SATURATION Saturation of the image (only for cameras).
    13 CV_CAP_PROP_HUE Hue of the image (only for cameras).
    14 CV_CAP_PROP_GAIN Gain of the image (only for cameras).
    15 CV_CAP_PROP_EXPOSURE Exposure (only for cameras).
    16 CV_CAP_PROP_CONVERT_RGB Boolean flags indicating whether images should be converted to RGB.
    17 CV_CAP_PROP_WHITE_BALANCE_U The U value of the whitebalance setting (note: only supported by DC1394 v 2.x backend currently)
    18 CV_CAP_PROP_WHITE_BALANCE_V The V value of the whitebalance setting (note: only supported by DC1394 v 2.x backend currently)
    19 CV_CAP_PROP_RECTIFICATION Rectification flag for stereo cameras (note: only supported by DC1394 v 2.x backend currently)
    20 CV_CAP_PROP_ISO_SPEED The ISO speed of the camera (note: only supported by DC1394 v 2.x backend currently)
    21 CV_CAP_PROP_BUFFERSIZE Amount of frames stored in internal buffer memory (note: only supported by DC1394 v 2.x backend currently)
    
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  • 原文地址:https://www.cnblogs.com/ycycn/p/14456848.html
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